Using a large, contemporary U.S. dataset, the National Longitudinal Survey of Youth-Child Supplement, this paper explores the relationship between maternal shift work and the behavioral outcomes of children aged 4 to 10. Special attention was given to subgroups of children (e.g., based on family type, family income, and mother's occupation and working hours) and the patterns of parental work schedules and work hours. Regression results suggest that maternal shift work may contribute to more behavioral problems. Of all children whose mothers worked non-day shifts, the strongest associations were found for children who lived in single-mother or lowincome families, whose mothers worked in cashier or service occupations, and whose mothers worked non-day shifts full-time. Implications for future research are discussed.
Keywords behavior problems shift workTo provide the conveniences of a growing 24-7 economy, employees often find themselves working at hours that are not between 6 A.M. and 6 P.M. The United States Census reports that about 15% of the labor force (approximately 15 million people) work evenings (between 2 P.M. and midnight), nights (between 9 P.M. to 8 A.M.), rotating shifts (schedules change periodically from days to evenings), or irregular schedules or hours (Bureau of Labor Statistics, 2005). In the European Union, the percentages of all those employed who work at these hours range from a low of 10% in France to a high of 20% in Greece, with Denmark, Finland, and the United Kingdom all close to 20% (as cited in Presser, 2003). Presser's (2003) research on work-family issues has consistently revealed that individuals who are African American, less educated, or low skilled are more likely than others to work non-day shift schedules. Moreover, single mothers and parents in families with young children under age 6 are also more likely to have shift schedules (Presser, 2003).Numerous empirical studies on work and occupations have shown the negative effects of shift work on adults' psychological, physical, and sociological well-being (Costa, 2003;Gold et al., 1992;Gordon et al., 1986;Presser, 2000). These findings raise concerns about the impacts that parental shift work can have on children's well-being (La Valle et al., 2002). In their research into this issue, sociologists and psychologists have begun to expand the classical definition of job quality (e.g., wages, benefits, on-the-job stress, etc.) to include aspects of the job, such as the type of work schedule, that have effects on home life. For instance, Presser (2003) broke new ground by looking at the impact of shift work on employees' health and family relationships. More recently, a handful of studies (e.g., Han, 2005; Starazdins et al., 2006) have extended that line of research to consider how the quality of employment affects other family members, particularly children. This study adds to that growing literature, which is of increasing policy relevance as greater numbers of lowincome mothers are moving into poor-quality jobs that ...